<script setup lang="ts">
import { onMounted, ref } from "vue";

// 1. 定义 ref
const pRef = ref(null)

// 3. onMounted 中获取
onMounted(()=>{
// onMounted 中 可以最早获取到 dom 元素的生命周期函数
// document.querySelector('p')

// 非空断言 + as 类型转换
(pRef.value! as HTMLParagraphElement).style.backgroundColor = 'pink'
})
</script>


<template>
 <div>
  <!-- 2， 设置给 dom 元素 -->
  <!-- ref="xxx" xxx 需要定义和状态变量同名 -->
  <p ref="pRef">彭于晏</p>
 </div>
</template>

<style>
* {
  margin: 0;
  padding: 0;
  list-style: none;
}

.news {
  display: flex;
  height: 120px;
  width: 600px;
  margin: 0 auto;
  padding: 20px 0;
  cursor: pointer;
}

.news .left {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-right: 10px;
}

.news .left .title {
  font-size: 20px;
}

.news .left .info {
  color: #999999;
}

.news .left .info span {
  margin-right: 20px;
}

.news .right {
  width: 160px;
  height: 120px;
}

.news .right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
</style>